Fixture-lamp.



L. H. ROCKAFELLOW.

HXTURE LAMP.

APPLlCATlON FILED; DEC. 6,1915- Lfimfifllm Patented Dec. 12, 1916.

WIT/V588] tnnnna snamns LQUIS H, RO'UXWAEELLOW, F SEATTLE,

lEmTURE-LAMP.

r' Patented Dec 112, intuit.

11,2@:%,1W1 Specification of Letters Patent.

Application filed December 6, 1915. Serial Np. 65,340. 1' b all whom it may concern:

Be it known that I, LOUIS H. RocKAraL- row, a citizen of theUmted States, and a resident of Seattle, 1n the county of King .and State of Washington, have invented;

certain new and useful Improvements in Fixtureliamps, of which the following is a full, true, and exact specification.

My intention relates to nnprovements 1n fixture lamps and has for-its principal objiect to provide an improved and novel form oi fixture in which ,an; improved reflector is utilized to copcentrate a portion of the light rays at a. predetermined point; to provide means whereby the reflector may be adjusted with respect to the source of light ;v rovide a novel form of multiple rehector. t

Uthcr objects will appear as my invention is more fully explained in the following specification, illustrated in the acc0mpanying drawings and pointed out in the appended claim.

In the drawings Figure 1 is side elevation 0i": my improved fixture with parts broken away along a central line, Fig. 2 is a bottom plan view showing the reflector in particular.

Referring more particularly to the drawings, numeral 1 indicates an electric bulb socket of the usual type, which is secured to a ceiling yoke 2 which in turn is its toned to a ceiling 3. A circular plate or spider 4. having a central opening which its slidably over socket l, is adjustably held in place by screws 5, which screwinto yoke 2. By means of the screws '5, the

spider 4 may be raised or lowered within certain limits. Secured to spider 4 is a concave reflector backing 6 upon the inner of which are mounted a plurality of plane reflectors 7. "lhe reflectors are or- '.-"a*i .;ed in circles and at such angles with. w pect to a source of light 8 that the light lays emanating. from said source which strike the reflectors centrally, are reflected convergentlytoward a common center which will to on the axis of the fixture. The reflectors 7 are held to the backing 6 by means of clips 9 which may be integral with or stamped out from the backingmexm her and are bent over the edges or corners of the reflectors 7.

As previously stated the reflectors may be raised ,"or lowered with respect to the source of flight 03!; means of the screws The changing of the position of the reflectors will alter the focal point of the central rays as reflected. An ornamental shell 10 is secured to spider 4 by means of screw rods A globe 12 is supported from the shellfin'the usual manner.

The concave and multiple reflector reflects and concentrates the light, which is originally thrown upwardly, toward a' point directly :beneath the light fixture whereby a lightot great intensity is produced; v a l While I have shown a particular form of embodiment of my invention, I am aware that many minor changes therein will readily suggest themselvesto others skilled in the art without departing from the spirit and scope of the invention, and I therefore desire. to avoid being limited to the exact form shown and described except as pointed out in the appended claim.

Having described my invention, What I claim as new and desire to protect by Letters Patent, isfi lln-a device ofi'the class described, including a. lamp bulb fand a lamp socket which is attached to a ceiling yoke, the combination of a spider loc 'ated centrally with respect to the said receptacle and a ljustably sccured to the said yoke, a concave reflector backingconcentric with hfi said spider and secured thereto, a plurality of trapezoidal reflecting surfaces arranged in circular and radial rows upon and secured to the inner face of the said reflector backing, and at such angles with respect to a com mon point in the said light bulb that the rays of light which emanate from said point;

and strike said reflecting surfaces centrally will be reflected toward a common focal pointlocated on the axis of the light bulb and at a predetermined dlstauce from sald common source polnt.

LOUIS H. noona'rnmiow.

l%%W@Etm WASHINGTON, ASIGN OR 015 ONE-HALF TO 

